This Twitter Party is pure fun and celebration. No cover charge, either.

Tweet about Firefox 4 with the #fx4 hashtag and your Twitter avatar will join thousands of others from around the world as part of our logo mosaic. Also, check out how the technology behind Twitter Party works by reading a behind the scenes post by Quodis, who created the site.

Last Thursday to celebrate releasing Firefox 4 RC, we had people from across the Mozilla project participate in a reddit IAmA to talk about Firefox 4. The discussion was a huge success with over 3,100 comments from around 2,000 people. There’s definitely a strong response that people are interested and excited about Firefox 4. And you could tell that the reddit community was delighted and impressed with the honest, personal (and sometimes cheeky) responses they got from Mozillians.

Some of the Mozillians who answered questions on reddit

We had hundreds of great questions and comments. Here a few that caught my eye:

Big thanks to all the Mozillians who helped response to questions and comments from the reddit community. I heard many of you enjoyed talking with the reddit community, and I know they loved the IAmA as well.

What was your favorite comment? What do you suggest for our next IAmA?

Today we’re doing an IAmA on reddit with people from across the Mozilla project. After releasing Firefox 4 RC yesterday, we’re ready to answer your questions.

For those not familiar with reddit, it’s a passionate + awesome community of people who love the Web. This is the first time we’re doing a sponsored event with reddit, and you’ll see the discussion promoted on the reddit homepage throughout the day. As Mike Beltzner says:

We’re long time reddit fans, and always wondered y we no reddit – so let’s fix that, today. A bunch of us will be checking back here between 10am and 2pm PT (at least) to answer your questions from all over the project.